package com.atguigu.netty.webSocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

//TextWebSocketFrame表示一个文本帧(frame)
public class MyTextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
    @Override
    protected void channelRead0(ChannelHandlerContext channelHandlerContext, TextWebSocketFrame textWebSocketFrame) throws Exception {
        System.out.println("服务器收到消息"+textWebSocketFrame.text());
        //回复消息
        channelHandlerContext.channel().writeAndFlush(new TextWebSocketFrame("服务器时间:"+ LocalDateTime.now()+" "+textWebSocketFrame.text()));
    }

    //当web客户端连接后就会触发这个方法
    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        //id表示唯一的值，LongText是唯一的  shortText不是唯一的
        System.out.println("handlerAdded被调用"+ctx.channel().id().asLongText());
        System.out.println("handlerAdded被调用"+ctx.channel().id().asShortText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved被调用"+ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("exceptionCaught被调用"+cause.getMessage());
        ctx.channel().close();
    }
}
